bash: /usr/bin/sed: No such file or directory

On a test server I purposefully deleted ????? in / - I was expecting the symlink /lib64 and the /media directory to be deleted. All went well (everything broke), but then I was curious about the output below: [root@testserver /]# ls bin boot dev etc home lib lib64 media mnt opt proc rh_share3 root run sbin srv sys tmp usr var [root@testserver /]# rm -rf ????? bash: /usr/bin/sed: No such file or directory [root@testserver /]# ls bash: /usr/bin/ls: No such file or directory bash: /usr/bin/sed: No such file or directory I see that some packages have sed as a dependency, but I'm not understanding why it's calling sed for something as simple as pressing Enter [root@testserver bin]# rpm -q --whatrequires sed krb5-libs-1.17-18.el8.x86_64 ca-certificates-2019.2.32-80.0.el8_1.noarch dracut-049-70.git20200228.el8.x86_64 crypto-policies-20191128-2.git23e1bf1.el8.noarch policycoreutils-2.9-9.el8.x86_64 authselect-libs-1.1-2.el8.x86_64 cups-filters-1.20.0-19.el8.x86_64 open-vm-tools-11.0.0-4.el8.x86_64 authselect-compat-1.1-2.el8.x86_64 dhcp-client-4.3.6-40.el8.x86_64 nfs-utils-2.3.3-31.el8.x86_64 autofs-5.1.4-40.el8.x86_64 Why does the line bash: /usr/bin/sed: No such file or directory show up? Obviously sed is considered missing, but why is it being called at all? It is also not mentioned if I just run a strace -o bash bash. I know sed stands for stream editor - is every bash command run through sed, or what else could be going on? The OS is an OOTB RHEL 8.2 (Oopta) with a GUI. **EDIT** Below is the output of set | grep sed: [user1@testserver ~]$ set | grep sed local command=$(HISTTIMEFORMAT= history 1 | sed 's/^ *[0-9]\+ *//'); COMPREPLY=($( compgen -W "$( bpftool help 2>&1 | command sed -e '/OBJECT := /!d' -e 's/.*{//' -e 's/}.*//' -e 's/|//g' )" -- "$cur" )); COMPREPLY+=($( compgen -W "$( bpftool -jp btf 2>&1 | command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" )) COMPREPLY+=($( compgen -W "$( bpftool -jp map 2>&1 | command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" )) COMPREPLY+=($( compgen -W "$( bpftool -jp map 2>&1 | command grep -C2 "$type" | command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" )) COMPREPLY+=($( compgen -W "$( bpftool -jp prog 2>&1 | command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" )) COMPREPLY+=($( compgen -W "$( bpftool -jp prog 2>&1 | command sed -n 's/.*"tag": "\(.*\)",$/\1/p' )" -- "$cur" )) type=$(bpftool -jp map show $keyword $ref | command sed -n 's/.*"type": "\(.*\)",$/\1/p'); COMPREPLY=($( compgen -W "$( command sed -ne 's|^iface \([^ ]\{1,\}\).*$|\1|p' /etc/network/interfaces /etc/network/interfaces.d/* 2>/dev/null )" -- "$cur" )); COMPREPLY=($( compgen -W "$( printf '%s\n' /etc/sysconfig/network/ifcfg-* | command sed -ne 's|.*ifcfg-\([^*].*\)$|\1|p' )" -- "$cur" )); COMPREPLY=($( compgen -W "$( command ls -B /etc/sysconfig/interfaces | command sed -ne 's|.*ifcfg-\([^*].*\)$|\1|p' )" -- "$cur" )); COMPREPLY=($( compgen -W "$( printf '%s\n' /etc/sysconfig/network-scripts/ifcfg-* | command sed -ne 's|.*ifcfg-\([^*].*\)$|\1|p' )" -- "$cur" )); local included=$( command sed -ne 's/^[[:blank:]]*[Ii][Nn][Cc][Ll][Uu][Dd][Ee][[:blank:]]\{1,\}\([^#%]*\)\(#.*\)\{0,1\}$/\1/p' "${configfile}" ); COMPREPLY+=($( compgen -W "$( { LC_ALL=C ifconfig -a || ip addr show; } 2>/dev/null | command sed -ne 's/.*addr:\([^[:space:]]*\).*/\1/p' -ne 's|.*inet[[:space:]]\{1,\}\([^[:space:]/]*\).*|\1|p' )" -- "$cur" )) [[ $# -ge $OPTIND ]] && echo "error: $FUNCNAME("$@"): unprocessed arguments:" $(while [[ $# -ge $OPTIND ]]; do printf '%s\n' ${!OPTIND}; shift; done); local hosts=$( command sed -ne 's/^[[:blank:]]*[Hh][Oo][Ss][Tt][[:blank:]]\{1,\}\([^#*?%]*\)\(#.*\)\{0,1\}$/\1/p' "${config[@]}" ); local argtype=$( LC_ALL=C $1 --help 2>&1 | command sed -ne "s|.*$prev\[\{0,1\}=[&1 | command sed -ne 's/.*\(--[-A-Za-z0-9]\{1,\}=\{0,1\}\).*/\1/p' | sort -u )" -- "$cur" )); COMPREPLY+=($( { LC_ALL=C ifconfig -a || ip link show; } 2>/dev/null | command sed -ne "s/.*[[:space:]]HWaddr[[:space:]]\{1,\}\($re\)[[:space:]].*/\1/p" -ne "s/.*[[:space:]]HWaddr[[:space:]]\{1,\}\($re\)[[:space:]]*$/\1/p" -ne "s|.*[[:space:]]\(link/\)\{0,1\}ether[[:space:]]\{1,\}\($re\)[[:space:]].*|\2|p" -ne "s|.*[[:space:]]\(link/\)\{0,1\}ether[[:space:]]\{1,\}\($re\)[[:space:]]*$|\2|p" COMPREPLY+=($( { arp -an || ip neigh show; } 2>/dev/null | command sed -ne "s/.*[[:space:]]\($re\)[[:space:]].*/\1/p" -ne "s/.*[[:space:]]\($re\)[[:space:]]*$/\1/p" )); COMPREPLY+=($( command sed -ne "s/^[[:space:]]*\($re\)[[:space:]].*/\1/p" /etc/ethers 2>/dev/null )); COMPREPLY=($( compgen -W "$( command ls -RL $modpath 2>/dev/null | command sed -ne 's/^\(.*\)\.k\{0,1\}o\(\.[gx]z\)\{0,1\}$/\1/p' )" -- "$cur" )) COMPREPLY=($( compgen -X '' -W '$( command ps axo comm | command sed -e 1d )' -- "$cur" )); COMPREPLY=($( compgen -X '' -W '$( command ps axo command= | command sed -e \ COMPREPLY=($( compgen -W '`command sed -e "y/|/ /" \ COMPREPLY+=($( compgen -W "$( command sed -ne 's/^\([^[:space:]#|]\{2,\}\)|.*/\1/p' /etc/termcap 2>/dev/null )" -- "$cur" ));